Anode



June 11, 1929. w MASSEY 1,717,239

ANODE Filed Oct. 8, 1925 Inventor: Wesley F massey,

His Attorney.

Patented June 11, 1929.

WESLEY F. MASSEY,

Application filed October.

My present invention relates to electron discharge devices and more particularly to the type of discharge device known as a power tube, the structure of which ordinarily comprises an anode, a cathode and a grid.

In the construction of tubes or discharge devices employing relatively heavy currents and high potentials, the size of the anode must be correspondingly increased. Difflculty, however, is often encountered in the use of large anodes due to-the fact that means for radiating a large amount of heat must be provided, and also due to the tendency of the anode surfaces to Warp when subjected to high temperatures. Further difliculty is e11- countered in the assembly of such anodes when they are made in sections.

It is an object of the present invention to provide in a power tube a hollow, sectional anode having a comparatively large heat radiating surface, together with means for easily assembling and reenforcing the sections of the anode.

The novel features which I believe to be characteristic of my invention are set forth with particularity in the appended claims. My invention itself, however, both as to its organization and method of operation, will best be understood by reference to the following specification, taken in connection with the accompanying drawing in which Fig. 1 shows an elevation of the anode structure, together with supporting means therefor; Fig. 2 shows a perspective view of an end portion of the anode, while Fig. 3 shows a complete tube partly broken away and embodying my invention.

Referring to the drawing, I have indicated at 1 a hollow anode structure having a continuous inner surface, the anode being made of molybdenum or other suitable material, and comprising a plurality of sections 2, 8, 4. and 5, each section being provided with stiffening and heat radiating flanges as indicated at 6-11 inclusive. The intermediate sections 8 and 5 of the anode are each provided with a central flange 7 and 10 respectively, formed by bending a portion of each section on itself, the abutting surfaces of each flange being connected by a hollow cylindrical head as shown at 12 and 18 and the inner surfaces of the section being in alignment. Each flange is provided adjacent the anode wall with a plurality of openings, in the present instance three. One of the OF BALLSTON SPA, NEW YORK, ASSIGNOR TO GENERAL ELECTRIC COMPANY, A CORPORATION OF NEW YORK.

AN ODE.

are arranged as shown in Fig. 2. A plurality of molybdenum or other suitable metal straps 15 are then inserted through the openings in the flanges in substantially parallel relation to one another, and are riveted or otherwise permanently secured to the walls of the anode.

With this arrangement the straps 15 not only serve to hold the abutting surfaces of the central flanges 7 and 10 in position, but further serve to secure the diflerentsections in position relative to one another, and to provide a reenforcingmeans whereby warping of the anode is substantially prevented. The anode is supported from a metal collar 16 by means of refractory metal supporting rods 17 which are attached to certain of the flanges as indicated in Figs. 1 and 2.

By the use of flanges or radiating portions 011 the anode the amount of pow-er that can be put into an anode having a given internal area is greatly increased. Furthermore, by

the use of metal straps as shown, the assembly of the flanged structures is simplified and at the same time a very rigid structure is provided.

Various modifications of my invention will readily suggest themselves to persons skilled in the art without departing from the scope of my invention as set forth in the appended claims.

What I claim as new and desire to secure by Letters Patent of the United States is:

1. In combination, an electrode comprising a plurality of sections forming a continuous surface, and a metal strap securing said sections in position relative to one another and itself to form an integral flange and two aligned surfaces, and means for securing said surfaces in alignment.

3. In combination, an electrode having a substantially flat portion and a heat radiating portion, and means extending through said radiating portion and permanently connected to said flat portion.

4:. In combination, an electrode having parallel walls and comprising a plurality of sections, each of said sections having a plurality of flanged members, means for securing said sections in position relative to one another, said means comprising a strap secured to the sections and extending through the flanged members. a V

5. In combination, a hollow anode, the interior surface of said anode being substantially rectangular in cross section, a plurality of flanges on one side of saidanode, said flanges being provided with openings and a relatively heavy metal strap extending through said openings and permanently con"- nected to one side of the anode.

6. In combination, an anode comprising a plurality of sections, each of said sections being'provided with a flange, the flanges having openings therein, and'a metal strap in said openings, said strap serving to secure the sections in position and to reenforce the electrode to prevent warping.

7. In combination, a hollow electrode, comprising a plurality of sections, each of the sections being provided with a plurality of flanges, said flanges being provided with openings and a plurality of heavy metal straps extending through said openings, said straps securing the sections to one another and serving to prevent warping of the walls ing the anode, said flanges having a plurality of openings and'means extending through the openings and attached to said opposite sides of the anode.

9. In combination, a sectional anode having at least three sections, a flange on each of said sections, said flanges having openings therein, and means comprising a strap extending through the openings and permanently connected to the sections, said strap serving to hold the sections in position relative to one another.

In witness whereof, I have hereunto set my hand this 7th day of October, 1925.

WESLEY F. MASSEY. 

